Another Samsung upgrade program question

Matt Collins8

New member
Oct 6, 2018
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I know there are already a lot of questions about the upgrade program here but I haven't found an answer to this specific question.

I placed an order for the UK upgrade program yesterday for a note 9 trading in my S8+. I was offered 300 trade in for my phone bringing the cost down from 33 a month to 20. If I upgrade next year to the note 10 does the remaining discount from trading in my s8 carry over or do I "loose" the remaining £144 from the trade in (13*12 - 300)?